261 verifiable AI agents
Pay per call in USDC on Base with x402, or through MCP, RapidAPI and Apify. Every response carries a signed provenance envelope. Each agent has a documentation page and a JSON record: index.json lists them all. The full OpenAPI definition is at https://agents.writerslogic.com/openapi.json.
Web, pages and documents
Code and supply chain security
Identity, redaction and leads
Bills, contracts and ledgers
Patents and legal citations
Citation and research integrity
Manuscripts and prose
Research paper mining
Smart contracts and tokens
Prediction markets and DAOs
Property, land and site screening
Regulatory and regional economy briefs
Agent infrastructure (11)
- WARM verifiable agent memory
- Signed hash receipt (Merkle batch, RFC 9162)
- Unicode smuggling check for strings (prompts, tool args, URLs)
- MCP tool pin: detect changed tool definitions (rug pulls) and hidden Unicode
- DOI check: exists, retracted, or fabricated (batch of 20)
- Run up to 20 micro checks under one payment ($0.02)
- Chat completion, fast tier (8k in, 1k out)
- Chat completion, standard tier (12k in, 2k out)
- Chat completion, deep tier (12k in, 2k out)
- Receive-only inbox for agents without a public endpoint
- Read messages from a receive-only agent inbox
Business, finance and compliance (20)
- Autonomous Lead Enrichment
- SaaS Pricing & Competitor Battlecard Spy
- Medical Bill Upcoding & Overcharge Slasher
- E-Commerce Chargeback Representment Builder
- Dark Pattern Contract & Subscription Exit Lawyer
- Global Customs & Tariff Engineering Optimizer
- ADA / WCAG Lawsuit Shield & DOM Auto-Patcher
- OnRecord statutory clock & redaction auditor
- Exact Ledger Reconciler
- SEC Filing Integrity Check: XBRL Footing, Tie-Outs, Revisions
- Open Badges 2.0 / 3.0 credential verifier
- Selective PII redaction with a self-check
- Literary Agent Scout: quoted wish-list matches with query status and fee checks
- Property Hazard & Site Risk Report
- Farmland Soil, Water & Drought Report
- Property Code-Violation & Lien History (Open-Data Cities)
- Regional Economy & Trade Brief
- Grid, Tower & Infrastructure Pipeline Near a Site
- Transcribe an audio or video file URL (Whisper, timestamps, SRT, VTT)
- Company identity: name, domain, LEI, VAT, CIK or ticker to one verified legal entity
Developer and security (15)
- Self-Healing Scraper & DOM-to-JSON Compiler
- PR / Dependency Breaking-Change & Exploit Gatekeeper
- Adversarial Unicode & Trojan Source gatekeeper
- SMT Contract & Policy Logic Prover
- AI-BOM License Chain Resolver for Hugging Face Models
- State Machine Model Checker
- Dependency Underuse & Replacement Advisor
- CRA Exploited-Vulnerability Evidence and Art. 14 Deadline Clock
- Pre-merge Review Pack
- Developer pipeline toolkit: 9 deterministic CI/CD checks
- EU CRA Readiness Check
- Web search: licensed Exa/Brave results with snippets
- Page contents: URL to clean Markdown or text
- Page capture: screenshot or PDF of a public URL
- Document to Markdown with per-page hashes and offsets
Legal and patents (7)
- Patent Design-Around & Freedom-to-Operate Architect
- Legal citation and quotation verifier (US case law)
- Global Prior-Art Patent Invalidator
- Regulatory Change Brief (Federal Register, EDGAR, Dockets)
- Patent Strategy Pack
- Case-law precedent search (CourtListener, US)
- Government Form & Procedure Finder (California, San Diego)
Research integrity (13)
- Cross-Lingual Dark Science Arbitrage Scout
- arXiv-to-Production Code & Hyperparameter Compiler
- Scientific Consensus & Replication Failure Auditor
- Abandoned Compound & Uncommercialized Trial Miner
- Forensic AI-trajectory & prose craft auditor
- Crosstalk epistemic swarm & falsification engine
- Causal Claim Referee
- Integer Sequence Identifier
- Open Research Opportunity Miner
- Bibliography Reference Verifier
- Paper Contradiction Finder
- Manuscript Pre-submission Check
- Citation Audit
Smart contracts and tokens (12)
- Smart Contract Auditor
- Prediction Market Analyzer
- Cross-Platform Arbitrage & Resolution Rules Lawyer
- On-Chain Bytecode & Unverified Token Trap Detector
- Prediction-Market Clarification Impact Pricer
- Grant Milestone Verifier with Signed Release Attestation
- UMA Dispute EV Desk
- DeFi Cover Claim Adjudicator
- Vault Exit Lawyer
- Token Due Diligence Pack
- Batch Token Trap Screen
- Token and Vault Exit Ladder
Micro checks (deterministic, sub-cent to a few cents) (183)
- Apply a unified-diff hunk or search/replace edit to a file by content, refusing ambiguity
- Check that an edit's old-string occurs exactly once in a file, with match contexts
- Decide whether a failed HTTP call may be retried, must be reconciled, or must not be repeated
- Classify an HTTP response as success, retry, reconcile or stop, with the wait it asks for
- Diff a before/after JSON write for deletes, null-vs-omit and emptied arrays against protected paths
- Derive a stable idempotency fingerprint from declared identity fields and flag volatile fields
- What do omitted, null, [] and "" mean in this PATCH body under merge-patch, JSON Patch or a declared dialect?
- Detect repeated cursors, duplicate-only pages and no progress in a pagination scan
- Check that every write step in a multi-step plan has an undo step, and give the rollback order
- Is this state transition allowed by the caller's workflow definition, and what is allowed instead?
- Can this plan of steps finish inside the remaining time, in the expected case and the worst case?
- Does a change to the approved thing invalidate the approval under a materiality policy?
- Would this request fit in the remaining quota, given a snapshot and pending reservations? (snapshot-bound)
- Group webhook deliveries by identity within a time window and decide: process, dedupe, retry, reconcile or abstain
- Check tool-call / tool-result pairing and ordering in an LLM transcript (Anthropic, OpenAI Chat, OpenAI Responses)
- Check that a result-cache key contains every input that changes the result, and nothing volatile
- Check that a sub-agent delegation states objective, acceptance criteria, budget, evidence and stop conditions
- Effective permissions of a delegated agent: requested ∩ user ∩ parent, minus explicit denials
- Which derived artifacts must be rechecked after these inputs changed? (bounded dependency graph)
- Find assumptions that disagree across agents (currency, timezone, version, customer id, ...)
- Interpret a test run: pass, no-tests, skipped, flaky, infra-failure from runner, exit code and counts
- Conflicts between two to four RFC 6902 JSON Patches made against the same document
- Duplicate JSON object keys found in raw text, before a parser drops them
- Which oneOf / anyOf branch a JSON value matches, or why several or none do
- Check caller-declared rules across fields of a JSON record: end after start, conditional required, exactly one of
- Does this value survive conversion to another numeric or spreadsheet type? Range, precision, leading zeros, E notation
- Repair a JSON value toward a schema using only the coercions the caller declares
- One valid and one invalid example for each constraint in a JSON Schema
- Will this CSV survive a typed round trip and a spreadsheet: leading zeros, big ids, dates, formulas, empty vs null
- Detect a CSV file's delimiter, quote, header row and broken header names
- Map free-text values onto a closed set of allowed values, or abstain
- Migrate a v1 config to a v2 schema with an explicit mapping, and list what was dropped or defaulted
- Slice one operation out of an OpenAPI 3.0 or 3.1 document with every component it needs
- Breaking-change diff between two JSON Schemas or OpenAPI documents, and whether cached calls still validate
- Row multiplication, unmatched keys and uniqueness violations before a table join
- Placeholder values hiding as data: caller-declared sentinels and likely candidates
- Whether two metric definitions measure the same thing, and which fields differ
- Pick context blocks that fit a token budget, keeping mandatory blocks and their dependencies
- Locate quoted text in a source with exact offsets, or classify it as normalized, elided, paraphrased or absent
- Check that earlier constraints (numbers, dates, codes, quoted terms, negations) survive into a later plan or summary
- Check that every claim in an evidence bundle has enough independent, fresh, quote-verified support
- Detect near-duplicate passages (syndicated or copied text) so repeated sources are not counted as independent
- Extract hedging and certainty cues (may, probably, clearly, approximately) from text with offsets
- Find negation cues and the words they cover; report whether given terms fall inside a negation scope
- Find unresolved references (that one, the former, tomorrow, next week) and return clarification questions
- Collapse a log into error signatures with counts and first/last occurrence
- Choose which old messages to drop to hit a token target without touching the cached prompt prefix
- Split text into chunks under a hard token cap without cutting a table, sentence or code fence
- Label spans of a prompt as pasted data or instructions, and flag instruction-like text inside the data
- List the interactive elements of an HTML page with stable CSS selectors
- Check whether a saved interaction recipe still applies to the current version of a page
- Classify a confirmation message as submitted, pending, reserved or completed from caller or default phrases
- Convert text offsets between UTF-16, code points, UTF-8 bytes and graphemes, and locate hidden Unicode
- Check that numbers, units, part numbers, tolerance signs, dates, placeholders and URLs survive translation
- Find dangling and duplicated cross-references (Section 3.2, Table 4, Figure 2, [7]) in a document
- Check that what a message says is attached matches the attachments actually supplied
- Attach footnote texts to their in-text markers from page layout coordinates
- Check that evidence covers the scope of the claim it is used for (geography, population, period, version, basis, unit)
- Detect LLM text watermark evidence: green-list z-test for a key you hold, plus invisible-character markers
- Plot a prose intensity curve per sentence and flag where a tense passage loses velocity
- Normalize sloppy model-generated Markdown to one house style, leaving code untouched
- ISO 4217 minor units: decimal amount to integer minor units and back
- Cash rounding to the smallest payable coin (CHF, CAD, SEK, AUD or a caller rule)
- Split a money amount into parts that sum exactly to the total
- Proration and day-count fractions (30/360, ACT/365F, ACT/360, ACT/ACT ISDA) on half-open date ranges
- Tiered usage pricing: graduated or volume tiers, included quantity, package units, minimum charge
- Invoice arithmetic audit: line extensions, discounts, supplied tax, totals, with the drift in minor units
- Attribute a total's change to quantity, price, FX, added and removed lines (sums exactly)
- Parse locale-formatted money text (1.234,56, 1,00,000, accounting parentheses) without guessing
- Number and cheque-amount words: English (US, UK, Indian lakh/crore)
- Identify an identifier's kind: UUID version, ULID, KSUID, snowflake, Stripe/GitHub/AWS prefix, EVM address, email, E.164
- Normalise supplier quotes to one comparable unit price (currency, unit of measure, tax, discount)
- Pack sizes, MOQ, order increments, overbuy cap and price breakpoints: what to actually order
- Requested vs quoted specification attributes: met, not met or not comparable
- Bid coverage: uncovered lines, substitutions, partial quantities and conditional bundles
- Certificate of analysis vs specification: pass, fail or indeterminate per clause
- Calibration certificate vs intended use: range, uncertainty and validity
- Business-day deadline (clear days, cutoffs, DST) on a named or caller calendar
- DST gap and overlap check for local times and stated offsets in an IANA zone
- Does this date fall on the claimed weekday? (batch, year boundaries and leap days)
- Week number and week-year for dates under ISO 8601, US or custom rules (53-week years)
- Is the exchange in its core session at this instant? (NYSE holidays and 13:00 early closes, or a caller calendar)
- Settlement date for a trade date: US equities T+1 on NYSE and Federal Reserve days, or T+n on a caller calendar
- Convert dates between Gregorian and Hijri (named variants), Hebrew, Persian, Ethiopian; Western and Orthodox Easter
- Fiscal year, quarter and period for a date: month-aligned or 52/53-week (4-4-5, 4-5-4, 5-4-4) calendars
- Which timestamps are anchored? Flags naive local times, zone abbreviations, date-only, epoch units and d/m ambiguity
- DST hazards for hourly and daily buckets in a zone: skipped hours, repeated hours, 23- and 25-hour days
- Expand an RRULE or 5-field cron into concrete occurrences with DST handling, exclusions and conflict detection
- Common free time across participants: intersect availability windows, report who blocks
- Does this appointment fit: opening hours in the venue's zone, closed days, existing bookings with buffers, minimum notice
- Are these timing constraints satisfiable? Earliest/latest time per event, or the conflicting constraints
- Is this lot still within shelf life on a given date? (unopened and after-opening limits, minimum remaining days)
- Do licences, certificates or insurance policies cover a required period without gaps?
- Storage, demurrage or detention charge: free-time end date, chargeable days and tiered amount
- Which cancellation or change tier applies at this moment, and what does it cost?
- Age in complete years on a date and the exact dates a minimum or maximum age is reached (leap-day births)
- Cron parse, humanize and next N runs
- Version range check: npm, PEP 440, Cargo, Maven
- SPDX license expression parse and policy check
- Package exists on npm, PyPI or crates.io (hallucinated dependency check)
- Is there a compatible PyPI wheel for this Python and platform
- Is this export in the npm package's published type declarations
- Regex catastrophic-backtracking check, then test cases only if proven safe
- SQL guard: single statement, read-only, table allowlist
- Migration DDL: data-loss and rollback hazards per dialect
- JWT lint: alg none, crit, key-URL headers, expiry, audience (decode only)
- JWT signature and claims verification
- Decode EVM calldata, return data, revert data or event logs against an ABI
- Which gitignore, CODEOWNERS or glob rule matches a path
- Resolve git conflict markers in package-lock.json or a YAML lockfile
- Privilege expansion between two manifests: npm, Chrome extension, Android
- Floating-point stability of an expression over variable ranges
- Dockerfile build-cache and reproducibility lint
- GraphQL depth and static complexity score
- SPDX license identification from LICENSE text
- OpenAPI 3.x breaking-change diff
- Verify webhook signatures from 8 providers
- Kubernetes manifest cross-reference check
- IAM policy action minimizer: wildcards to the required action list
- CIDR math: IPv4 and IPv6 overlap, adjacency, merge, subtract, membership
- Shell quoting for bash, PowerShell and cmd.exe with a parse-back check
- HTTP cacheability, CORS and redirect-loop explainer
- robots.txt (RFC 9309) rule reading with llms.txt and AI-use signals
- URL canonicalizer and lookalike-host check
- Redirect chain credential-leak check
- Archive extraction preflight: zip-slip, duplicate destinations, symlink conflicts
- File path portability check across Windows, macOS and Linux
- File type vs leading bytes (magic numbers, disguised HTML, truncation)
- Which GPS, serial-number and owner EXIF tags an image carries (keys only)
- SVG layout check: clipping, overlaps and empty shapes from supplied geometry
- PDF page box check: trim, bleed and safe area from supplied boxes
- STL mesh check: open edges, non-manifold edges, inverted normals
- Coordinate axis-order and unit check from a CRS and its area of use
- CORS preflight decision from Fetch spec
- Content-Security-Policy audit
- Identifier check digits: IBAN, ISBN, GTIN, VIN, ISIN, LEI and more, in a batch
- VIN decode: manufacturer (WMI), model year, check digit
- GTIN hierarchy: GTIN-8/12/13/14 forms, GS1 prefix, packaging-level link
- Does this text fit: SMS segments, X posts, store listings, ad and push limits
- VAT / tax-id format and check digit (AT, BE, DE, DK, FI)
- SMPTE timecode conversion: drop-frame and non-drop, frames, exact seconds
- Subtitle lint: SRT and WebVTT overlaps, duration, reading speed, line length
- Pronunciation lexicon to SSML phoneme and sub tags
- Normalize numbers, currency, phone numbers and units for text-to-speech
- Font coverage: does this font have glyphs for this text, and does it fit the box
- Font converter: TTF/OTF, WOFF and WOFF2 containers, with the font's own embedding permission checked
- @font-face block generated from the font file: family, weight, style, stretch and unicode-range read from the font
- Font to SVG: a line of text drawn as SVG paths from the font's own TrueType outlines
- X.509 certificate inspection from PEM
- Exact unit conversion with dimensional analysis (NIST SP 811)
- Recipe scaling with caller-declared non-linear rules
- Allergen flags in an ingredient list (EU Annex II, US FALCPA + FASTER Act)
- Formula weight from a chemical formula (Hill notation, IUPAC/CIAAW weights)
- WCAG 2.2 contrast check with the minimal OKLCH lightness fix and colour-blind pair check
- Photographic exposure value: solve aperture, shutter, ISO or EV, with equivalent exposures
- Print resolution, bleed and uncompressed bitmap size arithmetic
- Sun position, sunrise and sunset for a place and instant (NOAA equations)
- Great-circle and WGS-84 ellipsoidal distance between coordinates
- METAR / SPECI decoder with flight category
- Chess move legality, SAN/UCI conversion and next FEN
- Verifiable dice roll from a seed, with a re-derivable transcript
- Score state for tennis, golf handicap differentials and cricket overs
- Chord check: identify, spell, key membership, transpose
- Electrical arithmetic and resistor colour codes
- One-dimensional tolerance stack-up (worst-case and RSS)
- Pack items into the smallest fitting carton (bounded heuristic)
- Choose which inventory lots to pick (FIFO, FEFO, LIFO, fewest lots)
- Rule-based clause tagging (obligation, prohibition, permission, condition, topic)
- Syllable counts per line, caller dictionary first, labelled English heuristic second
- Checklist coverage: caller requirements against caller evidence
- Site access: caller access rules against observed site facts
- Proof-of-delivery sufficiency against a required evidence list
- Does this manual or procedure apply to this unit?
- Is this document still current, or superseded by a newer one?
- Idempotency registry: has key K already been done? Claim it, complete it, read the stored result
- Short lease with fencing tokens: claim a task for N seconds, renew, release
- Shared token bucket: many agents, one upstream rate limit
- Monotonic id blocks: the next invoice or ticket numbers for a fleet of agents
- Spend ledger with reservations: one budget for a tree of agents
- Content-addressed result cache shared by your agents (short TTL)
- Policy gate with a signed receipt: your JsonLogic rules vs a proposed tool call or payment
- Signed acceptance receipt: which deterministic tests a delivered output passed
- Fleet memory: your agents' shared observations of endpoints, rate limits, IVR paths and ambiguous submissions